Research Article
A Nonlinear Controller for Neutral Point Piloted (T-Type) Multilevel Inverter-Based Three-Phase Four-Wire DSTATCOM
Table 3
The performance of DSTATCOM under different loading conditions.
| Load (%) | Load powerfactor | Load side currents (rms, A) | Load side (%) THD | Source powerfactor | Source side currents (rms, A) | Source side (%) THD | Ila | Ilb | Ilc | a phase | b phase | c phase | Isa | Isb | Isc | a phase | b phase | c phase |
| 100 | 0.8 lagging | 40 | 60 | 20 | 21.7 | 26.26 | 28.23 | Unity | 45 | 45 | 43 | 2.28 | 2.5 | 3.02 | 0.5 lagging | 30 | 50 | 10 | 27.7 | 31.27 | 29.03 | Unity | 36 | 37 | 37.5 | 2.93 | 3.8 | 4.15 | 0.3 lagging | 22 | 48 | 8 | 31.85 | 33.86 | 29.43 | Unity | 33 | 34 | 35 | 3.41 | 5.2 | 4.75 |
| 60 | 0.8 lagging | 25 | 37 | 13 | 22.3 | 28.62 | 29.28 | Unity | 26 | 25 | 25 | 3.13 | 3.7 | 4.01 | 0.5 lagging | 20 | 32 | 10 | 27.7 | 31.27 | 30.67 | Unity | 20 | 21 | 22 | 3.79 | 4.5 | 4.53 | 0.3 lagging | 18 | 29 | 8 | 32.58 | 35.80 | 29.56 | Unity | 17 | 18 | 17 | 4.40 | 5.4 | 6.15 |
| 30 | 0.8 lagging | 13 | 19 | 8 | 23.9 | 26.26 | 28.23 | Unity | 14 | 12 | 14 | 3.43 | 3.9 | 4.02 | 0.5 lagging | 11 | 17 | 6 | 29.2 | 33.26 | 31.30 | Unity | 11 | 10 | 11 | 3.99 | 4.8 | 4.65 | 0.3 lagging | 9 | 14 | 5 | 34.82 | 39.23 | 34.43 | Unity | 9 | 8 | 9 | 4.46 | 5.8 | 6.35 |
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